Apparatus for finishing jewel settings



H. COLOMB APPARATUS FOR FINISHING JEWEL SETTINGS Filed Sept. 28. 1921 Patented Jan. 13, 1925.

HENRY COLOMB, or TAVANNES, CANTON nn BERNE, swrrzmnann.

APPARATUS FOR FINISHING JEWEL SETTINGS.

Application filed September 28, 1921. Serial No. 503,994.

To all whom it may concern:

Be it known that I, HENRY CoLoMB, a citizen of the Swiss Republic, residing at Tavannes, Canton de Berne, Switzerland, hays invented new and useful Improvements in Apparatus for Finishing Jewel Settings, of which the following is a specification.

This invention relates to the construction of parts for time keeping machinery and has for its main object the provision of settings containing drilled bearing jewels such that the cylindrical surface of the setting when reduced to size is exactly concentric with the drilled hole of the jewel. Further objects of this invention are to provide apparatus for producing said settings, and to simplify the mechanism so that finished parts can be turned out accurately and rapidly without special care on the part of the Workman.

A. preferred embodiment of the invention is illustrated in the accompanying drawings,

, in which similar reference characters designate corresponding parts in all views, and in which:

- Figure 1 is a section taken approx1mately on the center line through the essential parts of the mechanism, showing the relation of the parts at the commencement of the operation;

Figures .2 and 3 show the relative positions of the same parts at intermediate stages of the operation; and

' Figure 4 shows the same parts at the com pletion of the operation. M

Referring to these drawings, the mechanism comprises a die 1, havin a base portion 1', each piercedbyconcentric cylindrical passages 2, 6 respectively, preferably of the same diameter, a transverse evacuation passage 5 separating the die proper 1 from the base portion 1'.

Suitably mounted for cooperation with the die 1 is a punch 7, adapted "to headvanced into the die in the usual manner. Slidably mounted in the hole 6 of the base portion l is a cylindrical guide member 3, adapted to slide upwardly through the die opening 2 at least to the top thereof and downwardly below the evacuation passage 5, this guide member 3 having a projecting pin 4, preferably conical in shape, located centrally with respect to the guide member and consequently also located centrally with respect to the die opening 2. The evacuation passage 5 is arranged to convey a conameter than the die opening 2, in w tinuous stream of air beneath the die member 1, to receive and carry outfrom beneath the opening 2 finished work forced down by the punch 7.

'Ijhe work comprises a jewel setting 8 which in the rough is of slightly lar er dihich is mounted a jewel 9, having an approximately central drilled bearing hole.

The object is to line up a piece of work so as to bring the opening of the jewel concentric with the die for cutting the setting to size, then force the work through the die, and remove it. 7

By the use of the apparatus described this is accomplished by raising the punch 7 out of the way, raising the guide member 3 to expose the pin 4 above the die 1, fitting a work piece in place with the hole of the ewel fitting on the pin 4, and lowering the .punch to force the work into the die, at the same time pushing the ide member down, so that the pin 4 causes t e work when forced into the die to be in such position that the cylindrical surface of the setting is concentric with thepin 4 and hence with the center of the hole of the jewel. After the work has been started properly into the die as shown in Figure 2, the guide member 3 is withdrawn as shown in Figure 3, and the punch 7 advanced to the position shown in Figure 4, completing and ejecting the work into the passage 5 where the air current as indicated by the arrow carries it off.

By thus forcing the setting through the die 1, the latter shears oil the peripheral surface of the settin thereby removing any unevenness and ren ering the setting truly cylindrical.

Havin claim and 1. Means 'for finishing settings for bearmgs for time keeping mechanism, comprising a die, a guide member slidably dis osed therein and having a centrally dispose portlon adapted to engage the hole of the jewel of the bearing, and a punch for cooperation with said die.

2. Means for finishing settings for bearngs for time keeping mechanism, comprisnow described my invention, ll

ing a die, a guide member slidably dis osed osed desire to secure by Letters Patent the die while still engaged by the guide member, and the guide member being adapted to be Withdrawn to permit further advancement of the punch to completely finish and eject the setting.

3. Means for. finishing settings for bearings for time keeping mechanism, comprising a die, a transverse evacuation passage therethrough, a guide member having centrally located means for engaging the hole of a jewel of a bearing slidably disposed in said die for movement to expose said engaging means above the die and for withdrawal below said evacuation passa e, and a punch for cooperation with said ie.

4. Means for finishing settings for bearings for time keeping mechanism, comprising a die, a transverse evacuation passage therethrough, a guide member having centrally located means for engaging the hole 2 of a jewel of a bearing slidably disposed in said die for movement to expose said engaging means above the die and for withdrawal below said evacuation passage, a punch for cooperation with said die, and means for sending a stream of air through said evacuation passage.

In testimony whereof I have signed my name to this specification.

HENRY COLOMB. 

